Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2c684c28d0c41f0…

MALICIOUS

PDF

186.6 KB Created: 2015-07-24 03:45:28 +03:00 Authoring application: wkhtmltopdf 0.12.2.1 (via Qt 4.8.6)
MD5: ebb3509e089cb8fa7c1e6f1d4a31fea8 SHA-1: 32406a9ffcc549d031e0dafbb139b297b845a62b SHA-256: d2c684c28d0c41f04c85883a7f178a46ab1f3029b2a3deba54a860982958df0c
92 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF was flagged by a critical heuristic for linking to known malicious redirector infrastructure. The ML classifier also strongly indicated maliciousness. The embedded URL points to botcraftman.ru, which is associated with malicious redirects. No scripts were extracted, but the PDF structure itself is indicative of a malicious redirector lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 2

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://botcraftman.ru/?lip&keyword=%D0%A1%D0%BA%D0%B0%D1%87%D0%B0%D1%82%D1%8C+%D0%B8%D0%B3%D1%80%D1%83+sims+3+%D1%87%D0%B5%D1%80%D0%B5%D0%B7+%D1%82%D0%BE%D1%80%D1%80%D0%B5%D0%BD%D1%82+repack&charset=utf-8
    • http://fastpic.ru/
    • http://www.liveinternet.ru/click
    • http://img0.liveinternet.ru/images/attach/c/5//4184/4184554_sims_3_polnaya_antologiya_19_v_1_skachat_torrent_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4187/4187503_daemon_tools_ultra_seriynuyy_nomer_skachat_besplatno.pdf
    • http://img1.liveinternet.ru/images/attach/c/5//4185/4185032_vizitnaya_kartochka_voditelya_taksi_s_fotografiey_obrazec.pdf

Extracted artifacts 6

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_048_off0002ab21.bin
1f1d135de3633ea067969d92d01a8f7b73e70f502f0efa8a2d4371bff4a2b852		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2AB21 7372 bytes
font_00_sfnt_off00024543.bin
880e53e6f12106514012eaabb19a261b9f8ae03d695445fc59a5b9b5a1293281		 pdf-font-stream PDF embedded font (sfnt) at offset 0x24543 3556 bytes
font_01_sfnt_off000252c6.bin
042c991f8d6fdb16589097b3e83bb4196bc432b0eda273f9a201a34ebaed577c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x252C6 14592 bytes
font_02_sfnt_off00028006.bin
e86f5f1499fddf64b9d22f47989a759c430a345ce1013206151cca66d8b20c01		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28006 14632 bytes
font_04_sfnt_off0002c0b0.bin
819f9cc5156bfe3dae03045446d677a19b5879270357875344f9514601da73e3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2C0B0 6084 bytes
font_05_sfnt_off0002d045.bin
9364d8c42993f0db1eb41a63b15a48dd56cef5056a611ab8e91dd81183a5a95e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2D045 3752 bytes

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